18918029

素因数分解:

${\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:237

約数の個数: 24

約数和(自身を含む): 22205952

約数和(自身を除く): 3287923

約数列:

[1, 13, 23, 31, 157, 169, 299, 403, 713, 2041, 3611, 3887, 4867, 5239, 9269, 26533, 46943, 63271, 111941, 120497, 610259, 822523, 1455233, 18918029]

約数ペア:

[(1, 18918029), (13, 1455233), (23, 822523), (31, 610259), (157, 120497), (169, 111941), (299, 63271), (403, 46943), (713, 26533), (2041, 9269), (3611, 5239), (3887, 4867)]